7.Even today, a century after Pasteur developed the first vaccine, rabies almost always kills its victims unless inoculated in the earliest stages of the disease. (A) its victims unless inoculated (B) its victims unless they are inoculated (C) its victims unless inoculation is done (D) the victims unless there is an inoculation (E) the victims unless inoculated
24,Even though its per capita food supply hardly increasd during two decades , strigent rationing and planned distribution have allowed the PRC to ensure nutritional level of 2,000 calories per person per day for its population. B. Even though its per capita food supply has hardly increased in
答案:B,可是A为何比B好?
10, Climatic shifts are so gradual as to be indistinguishedable at first from ordinary fluctation in the weather .
C. so gradual that they are unable to be distinguished. 答案:A
24. Even though its per capita food supply hardly increased during two decades, stringent rationing and planned distribution have allowed the People’s Republic of China to ensure nutritional levels of 2,000 calories per person per day for its population. (A) Even though its per capita food supply hardly increased during (B) Even though its per capita food supply has hardly increased in (C) Despite its per capita food supply hardly increasing over (D) Despite there being hardly any increase in its per capita food supply during (E) Although there is hardly any increase in per capita food supply for